Gunnison
AvalancheEric Murrow · Dec 7, 2020 · Gunnison
Weather
Gorgeous. Mild air temperatures with very little wind below ridgetops. Full sun.
Snowpack
Shallow conditions throughout West Brush Creek. Snow volumes looked to decrease as we traveled east towards the head of West Brush Creek drainage even as elevation increased. The wind has affected most snow surfaces near and above treeline. Protected below treeline slopes that avoided the worst of the wind were around 40cm of faceted fist-hard snow. Oversnow travel was difficult and required unusual routes to stay on snow and avoid scree and bushes. There is very little terrain in this area that is viable for downhill recreation…so we just went for a tour following the valley bottom to document snow coverage in the area. Most terrain was well faceted with thin windboards capping the surface on slopes near and above treeline. We got one mentionable collapse of a 2-3 inch thick, pencil-hard windboard sitting on fist-hard 1-1.5mm facets at 12,000? on an east-facing feature – cracks propagated around 75 feet. Faceted snow was in the 1-2mm range on west through north through east-facing slopes and fist-hard. Southerly slopes were often melted back to dirt or melt/freeze crust sitting on the ground.
Avalanche
Two small loose avalanches in steep terrain below treeline. Looked like east-facing rock bands may have shed small amounts of snow from solar warming onto slopes below.